Results 61 to 70 of about 819 (196)

Monitoring and Confirmation Method for Submodule IGBT Open‐Circuit Faults in MMCs Under Different Modes

IET Power Electronics, Volume 18, Issue 1, January/December 2025.
This paper proposes an effective detection method for insulated gate bipolar transistor (IGBT) open‐circuit faults in multiple modular multilevel converters (MMCs) working in inverter and rectifier modes. This fault detection uses segmental structure and is composed of the fault monitoring and fault confirmation.
Zhengkui Zhao, Minxiao Han
wiley   +1 more source

Phasor Estimation of Transient Electrical Signals Using Modified Covariance Enhanced Cleaned Characteristic Harmonic Filtering in Protection Relay

Energies
Modern protection relays require accurate and fast phasor estimation under harsh transient conditions, including a decaying DC component, harmonics, interharmonics, noise, and frequency instability.
Natheer Alwan, Veljko Papic
doaj   +1 more source

Impedance‐Based Adaptive Droop Control for Islanded AC Microgrids and Overview

International Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.
Recent improvements in the application of distributed energy resources (DERs) and microgrids (MGs) have made controlling these resources very important. However, there are still many challenges in this field. One of the anticipated challenges in islanded MGs (IMGs) is the mismatched output impedance of DERs, which affects the volt‐var regulation ...
Forough Qashqaie, Hadi Saghafi, Ramtin Sadeghi, Bahador Fani, Michele De Santis   +4 more
wiley   +1 more source

Data‐Driven Deep Learning Algorithm for Harmonics and Interharmonics Flicker Prediction and Mitigation in the Smart Grid System

International Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.
In grid‐connected smart distribution systems, the prediction and mitigation of flicker caused by harmonics and interharmonics present a significant challenge for stable grid operation, particularly in the presence of distributed renewable energy sources (DRESs).
Shree Ram Senthil Subramani, Balamurugan Rangaswamy, Jaouher Ben Ali   +2 more
wiley   +1 more source

Wavelet-Based Harmonic Magnitude Measurement in the Presence of Interharmonics

, 2023
The increasing proliferation of power electronic converters, nonlinear loads, and distributed generation are leading to increased levels of harmonic and interharmonics in power networks.
Häselbarth, Stefan, Yanchenko, Sergey, Kai Strunz, Sergey Yanchenko, Oliveira, Aurenice M., Strunz, Kai, Costa, Flavio, Flavio B. Costa, Stefan Häselbarth, Aurenice M. Oliveira   +9 more
core   +1 more source

Effect of Rectangular Voltage Fluctuations on Currents of Single-Phase Induction Motors

Scientific Journal of Gdynia Maritime University
Various power quality disturbances commonly occur in a power system, including voltage fluctuations. These can be analysed as simultaneous occurrences of voltage subharmonics and interharmonics of various frequencies – components of frequency less than ...
Marcin Pepliński, Piotr Gnaciński
doaj   +1 more source

Control System of an SVC Based on ARMA Model to Improve the Displacement Power Factor of an Electric Arc Furnace

Journal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.
In the steel industry, electric arc furnaces (EAFs) are essential for metal scrap recycling. However, they are known for their high reactive power consumption, negatively impacting power quality (PQ). The static VAR compensator (SVC) is the reactive power compensation device that provides the best cost‐benefit relation for mitigating the impact of EAFs.
J. Marulanda-Durango, A. Escobar-Mejía, E. Giraldo, Antonio Bracale   +3 more
wiley   +1 more source

The Extent and Limitations of Correlating Measured Interharmonics and Measured Voltage Fluctuations [PDF]

, 2015
Amplitude modulation is a well-known cause of voltage fluctuations resulting in luminous lamp flicker. Amplitude modulation can be more generally quantified in terms of interharmonics. The theoretical correlation between interharmonics and lamp flicker
Eidson, Brandon
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RETRACTED: Cross‐country high impedance fault diagnosis scheme for unbalanced distribution network employing detrended cross‐correlation

IET Generation, Transmission &Distribution, Volume 18, Issue 24, Page 4192-4208, December 2024.
The cross‐correlation technique was used in this study to recover the complex, aperiodic, asymmetric, and non‐linear properties of the signals during cross‐country faults with high impedance fault syndrome. Due to its reduced sensitivity to background fluctuations, a given change may not affect all of the component peaks.
Pampa Sinha, Kaushik Paul, Sayanti Chatterjee, Fausto Pedro García Márquez, Jyotsna Ogale, Ahmed Ali, Baseem Khan   +6 more
wiley   +1 more source

Polyspectral signal analysis techniques for interharmonics in shipboard power systems

, 2008
textIn this dissertation, we present the theory and application of polyspectral signal analysis techniques for interharmonics in shipboard power systems.
Kim, Taekhyun, 1977-
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